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Matematika Sekolah Menengah Atas a. Rp. 18.651.600

b. Rp. 15.651.600

c. Rp. 15.543.600

d. Rp. 18.543.600​

a. Rp. 18.651.600

b. Rp. 15.651.600

c. Rp. 15.543.600

d. Rp. 18.543.600​

Jawaban:

A

Penjelasan dengan langkah-langkah:

d = 30 m

r = 15 m

r + jalan = 18 m

Luas jalan = 3,14 x (18² - 15²)

= 3,14 x (324 - 225)

= 3,14 x 99

= 314 - 3,14

= 310,86 m²

biaya = 310,86 x 60.000

= Rp. 18.651.600,oo

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